Mini-portable oxygen concentrator



FIG. 1 is a perspective view of our mini-portable oxygen concentrator showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a back elevational view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in FIGS. 1, 2, 4, 5, 6 and 7 are included for the purpose of illustrating portions of the portable oxygen concentrator that form no part of the claimed design. 

The ornamental design for a mini-portable oxygen concentrator, as shown and described. 